Arc-lamp regulating mechanism.



, PATENTED JULY '7, 1908. E. P. WARNER & G. WILER. ARC LAMP REGULATING MECHANISM.

APPLICATION FILED JAN.15, 1906.

is arranged to slide vertically, as usual, in the "applied. in the middle. is thus balanced and permits great lever arm (1 and Earlier P. WARNER Annoinr wILEn, or c HIOAGO, ILLINOIS, ASSIGN ORS TO WESTERN ELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS Elite-LAME? GULATKNG Application filed January 15,

To, all whom it may concern:

Be it known that we, Ennnsrl. WARNER and CARL' WILER, citizens of Y the United States, residing at Chicago, in the county of Cook and State of lllinois, have invented a certain new and useful Improvement in Arc- Lamp Regulating Mechanism, of which the following is alull, clear, Concise, and exact description. I

Our invention relates to an electric arc lamp, and its object is to provide an improved regulating mechanism which will be simple, compact and reliable in pperation.

The invention further contemnlates an iinproved device for retarding the lifting movementof the movable carbon.

The accompanying drawing is a sectional elevation of the regulating mechanism of an arc lamp constructed in accordance with our invention. The upper or movable carbon a framework otthe lamp, and a ring clutch b is provided for engaging said carbon and adjusting the position thereof, said clutch being arranged to be recip rocated by means of an electromagnet which in the lamp-shown is a solenoid c. In accordance with our invention, the armature c of the solenoid is connected with the horizontal portion d oi a lever. Such connection may be made, as indicated in the drawings, by securing a verticall r projecting connecting member 0 to an angu ar extension 0 of the armature or plunger 0 of the solenoid, said connecting member being provided with an opening 0* through which the lever d loosely passes. Said lever has a downward extension (2 alongside the carbon rod, which extension is connected at its lower end with said clutch b. A retarding device such as the dash pot,i llustratcd is connected with the opposite end of said lever, which may be provided with an upward extension d so that the parts maybe arranged compactly. The feed clutch and the carbon held thereby are thus. hung from one arm of the lever 01 while the retarding de vice or dash pot is nu'ng-from the other end thereof, the lilting lorceof the magnet being The moving system e and freedom oi movement of the parts without danger of sticking, each part adjusting itseli' to the others. The freedom of movement is increased by interposing a link 6 between the the clutch b, so that the end Specification of Letters Patent.

ME CHANISILZ.

Patented Jul 7, 190s.

190s. Serial No. 296,073.

of said lever arm may swing slightly toward or from the carbon' rod without causing lateral movement of said carbon rod or any tendency either to undue sticking or undue looseness of the clutch, said clutch being only moved vertically in response to the magnet. The lever arm (1 may be divided by an menlating couplingd to prevent passage of cu'r- I rent to the carbon by way of the clutch. It is intended that the movable carbon shall receive current only through the flat spiral feed ribbon j. k

it should be noted that the plunger or armature of the solenoid is not rigidly con nected with the operating lever d, but is ca; pable of slight movement sidewise along the same, so that said armature will act merely to lift said lever, and any tendency to lug willthus be lessened.

The retarding mechanism is connected to the upward extension or arm (1 oi the operating lever, and is arranged to oppose the lifting movement of said lever. said retarding mechanism comprises a movable cylinder 9 and a fixed piston it inside. said cylinder and adapted to slide therein as the cylinder is moved up or down. A valve K is provided. for controlling the admission of air to the cylinder, said valve being connected to the regulating mechanism in such a way as to be closed by any movement thereof in a direction to hit the carbon, and to be opened by opposite movement. the form shown, the valve is seated inside the end of the cylinder, and has a stem extending out through a hole in said end and connected by a pin mwith the endoi the lever arm d". The cylinder is thus suspended from said lever arm by said valve stem, and its weight serves to seat the valve firmly, so that any lifting movement of said lever arm in res onse to the pull of the so l enoid is resistec by the pressure of the external air upon the piston h Downward movement of the carbon, however, be accomplished uickly, and it will be noted that in the retarc ing mechanism of my in-" vention any downward movement of the lever arm (1 results i'irstin' o ening the valve K, after which the further ownward niovcmeet is opposed only by'the slight friction of the cylinder andpistom so that the movement is made quickly and. easily.

We claim:

l. In regulating mechanism for an are As shown,

should 100 lamp, a lever comprising a horizontal portion and an extension from each end of said horizontal ortion, said extension projecting vertically in opposite directions, a feed clutch connected with one of said extensions, a retarding device connected to said other extension, and an electromagnet provided with an armature connected to said horizontal portion of the lever.

end With said 2. In an electric arc lamp, the combina tion with a movable carbon, of a solenoid providedwith an armature, a retarding device, the paths of movement of said carbon, armature and retarding device being parallel, and a lever connected at one end with said carbon, at the other end with said retarding device and intermediate its ends with said armature.

3. In an electric arc lamp, a regulating mechanism comprising a feed clutch, an electromagnet having an armature movable in a vertical direction, a retarding device, and a lever extending generally in a vertical direction, said lever being connected at one feed clutch, at its other end With said retarding device and intermediate its ends with said armature.

4. In an electric arc lamp, the combination with a clutch [or engaging a movable carbon, of a lever extending as a whole in a vertical direction and provided with a short horizontal portion intermediate its ends, said lever being connected at its lower end to said clutch, a retarding device connected to the 11 per end of said lever, an electromagnet iiaving an armature movable in a vertical direction, and means for connecting said armature to said horizontal or'tio'n 'of the lever, said connecting means eing constructed and arranged to permit 01" a slight lateral movement of said connecting means relative to said lever. I

In Witness whereof, we hereunto subscribe our names this 11th day of January,

ERNEST P. WARNER. CARL WILER. Witnesses:

BERT STARR YORK, ROY T. ALLOWAY. 

